PreSonus StudioLive 328AI - Manual (Page 15)

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2 Getting Started
2.2 Level Setting Procedure (18sAI)
StudioLive ™ AI-Series Loudspeaker
Owner’s Manual
11. Turn the Line level knob on your full-range loudspeakers to the fully
clockwise position.
12. The line-level inputs should be set so that the green Signal LED is
illuminated most of the time, but the red Clip LED illuminates only with the
highest transient peaks or not at all. If your line-level source is clipping the
inputs on your 18sAI, you will need to turn down the source’s output level.
13. If more high-frequency output level is required, turn the Speaker level knob
clockwise on your full-range loudspeakers. In most cases, the level should
be set the same on both loudspeakers.
14. Adjust the Sub level control on your 18sAI to balance the low-frequency
content level to taste.
15. The full-range loudspeakers offer a highpass filter centered at 100 Hz. With
or without this filter engaged, the full-range loudspeakers are time-aligned
to pair with the 18sAI to create a true 4-way system. Experiment with
engaging and disengaging this filter to get the desired effect. Without the
filter engaged, your system will provide bigger low-frequency content.
Engaging the filter will provide a more linear frequency response. In either
case, please remember that engaging/disengaging the highpass filter will
also adjust the time-alignment of the speaker and it will mute momentarily
until all filters and timing settings have been loaded in the DSP.